@misc{indiciae18883c397240, title = {Seismic-reflection and sidescan-sonar data collected on the Potomac River, Maryland and Virginia, during May 1979}, author = {Harley J. Knebel}, year = {1981}, doi = {10.3133/ofr81174}, url = {https://pubs.usgs.gov/publication/ofr81174}, note = {Source identifier: ofr81174} }